Gearing.



M S. BROWN.

Patented June 19, 1917.

WITNESSES A 7TORNEY8 ai'itomobile liming two "i Monaco snows, or

To all whom it away concern:

Be it known that creme S. BROWN, :1 citizen of; the UnitedStetes, end aresident of Goldiield, in the county'oi' llsmeraldii and State ofNevada, lmve invented'zi new and useful In iprovement" in Gearing, ofwhich the following a spccifi'cation;

This invention is an improvement in gearing particularly designek fl forFord automobiles and relates more particularly to a transmissionmechanism to be used in connection With a utoiiiobiles"which are alreadyequipped witl ineans' for .drii 'ing the rear at two or more speeds;

An object of the res lit invention to provide an auxiliary connectionwith the I ordinary trzins ni l sion gearing of an iiitoniobile wherebythe iiiiinher of speedsa-t vliiohf the ear-inlay be driven 's multipliedtwo-fold;

As before suggestec'i efurtlier provide an auxiliary"f geiiring 'r obectis "to 'oeci ll adapted for use in connectionwith the ram rivi rd speedsso arranged the t, the drivingshz I the vehicle transmission gearing maydrive the rear axle either directly or through the intervention of it'i'echz nisin;tli is'providing the i 'eliicle with our forward speeds. Afnrther object islto provide a gearing for use in connectionWitlilaiitoniobiles and attachable "to the rear 1X le'casing containingthe dilierenti al w here'by swarm shaft may be directly" connected tothe follower shaft which drivesthe drive 'shziftlof the dirierentia lthrough connecting gears; may rotzite iii lepe cle iit thereof ornmylieconnect-- ed thereto by gearing; to ch-gmge thes eed. A further objectis to attiin'tl ebeforementioned ends in 1a novelIand"expeditious mannerand with these and otheioblects in what is claimed without departingfromthe spirit of the invention. v 2

1 11 the drawings accon'ipanying lilllSSPQClliczition and foi'ining apart thereof, the pre I 'fe'rred einbodinien'tiof myinvention isillustrated, in wnichl Figure 1 is a. top view in section of thetransmission gearing, and cooperating parts iig to be used inGQLIJFLELD, NEVADA. v

Me amine.

v Specification of Letters Patent. Xy emwe 5m 3917 limilicetionfiled Ho'rember 24, 1914. Serial No. S73,'?G.; iv I boltedto the flange orcollar-2, and thus may be zittzwhed to any vehicle alrezidyliii use, andreadily detached therefromshould it be so desired.

Extending out tiail alineinent with the neck 5 is the housing 10, inwl'iicli' is located the bearing11, 1) tat-ably receiving; the driveshaft 12 which extends within the casing, and is provided "with thesquared or polygonal end The ard from end in substini drive shaft andthe housing-10therefor is extended. outwardly as shown in the dr, W-ing, thefr'ont end of the drive shaft beiig fr edzipted for connectionith the universi l joint from the transmission mechanism.

A eel: shaft or axle 14a is rigidly disposed 5 within casing an extendsparallel .to the drive shaft 12 and follower shaft 3, it being il(ri)lin. this connection that the foilower? 'shailtis jonrnziled Within ktbearing 15 ried l y the casing neck. 1

The follower shaft is provided with the longitudinal opening 16extending inwardly from its end 17, in which jonrmtled heyreducedextremity 18 of the drive slum If thrust bearing is established betweenthe drive midfollmver shaft and is veli'ected by the ball 1%)-pOSltlOnGCl within the oiiiening '16 against which the drive shaftextremity Q18 bears. V r v.

' ll. gear 20 is located with in the casingmid rigidly secured to orformed a part of. the follower shaft 21, and is provided. with the"trcinity 18 of the drive shaft rolatablv e3:-

'tc'ni'is 'lhe OFUQOSGd face of the-gear; is

drive shaft is rotated a corresponding motion Will be imparted to thesliding gear and clutch 24 23 to thus forcibly rotate the follower shaft3, p ovided the clutch members are in engagement.

A sliding member 26 is rotatably mounted upon the jack shaft 14 andincludes the connected gears 27 of different size, which are adapted tomesh with and engage the gears 20-24 when moved therebeneath. In orderto move the sliding member 26 into position with the gears meshing withthose of the drive and follower shafts, it is provided with the groove28, in which the prongs 29 of the fork 30 extend. A somewhat similararrangement is provided for the shifting of the clutch-gear 23-24, thesame constituting a groove 31 and pronged fork The wall of the casing 4is provided with the boss 33, through which the controller shaft 34extends, to which latter the lever 35 is secured. The lever 35 carriesat its remote extremities the forks 30-32 and effects a pivotalconnection therewith so that as the rocking controller shaft 3a isoscillated, the clutch-gear 23 24c and sliding member 26 will be movedin reverse directions.

The arrangement and extent of the vari: ous parts is such thatpro-supposing. the clutch in engagement as depicted in Fig. 1, in whichthe drive shaft 13 is directly and positively connected to the followershaft 3, a rocking of the controller shaft 34 will draw the clutchmembers out of engage-v ment, allowing the drive shaft 12 to rotateindependently of the follower shaft which position is of particularadvantage during the starting of the engine and the actuation of themain gearing so that the same will become lubricated and in a conditionto properly transmit power to the rear axle of the vehicle.

A further movement of the controller shaft 34 brings the gears 24: and27 into mesh with the result that motion will be imparted to thefollower shaft at a decidedly reduced speed. The shaft extremity 13 isprovided with the three spaced openings or depressions 36, with whichthe spring pressed member 37 carried by the gear 24 is adapted to c oactand resiliently lock the parts in the three above-mentioned positions.

As before stated the attachment is especially adapted to be used withthe Ford automobile and is designed to take the place of the propellershaft and the propeller shaft housingof said automobile.

From the foregoing it will be apparent that the auxiliary transmissiongearing as thus disclosed may be readily secured to a rear axle casinginclosing the differential of the ordinary type and thus constitutes anattachment therefor, and is adapted to multiply by two-fold the speedsas represented by ,the speeds at which the drive shaft 12 may be driven.lVith this attachment the gears can be placed in the neutral positionwherein the drive shaft 12 may rotate independent of the follower shaftand the drive shaft will be free to turn until the engine warms up.

Having thus described my invention, what I claim is:

1. An attachment for motor vehicles com prising a casing having anoffset neck, means for securing the neck to the rear axle casinginelosing the differential, a drive shaft housing extending forward fromsaid casing in line with said neck, a bearing in said housing adjacentthe casing, a drive shaft journaled in said bearing and extend ing intosaid casing, a bearing carried by the casing neck, a follower shaftleading from the casing and journaled in said bearing in the casingneck, the follower shaft being adapted for connection to thedifferential, and cooperating means disposed within said casing engagingsaid drive and follower shafts for the transmission of motion at variousspeeds therebetween, and allowing for the free rotation of said driveshaft. i

2. An attachment for motor vehicles, comprising a casing having anoffset neck for detachable connection with the rear axle casinginclosing the differential a drive shaft housing extending forward fromsaid casing in line with said neck, a drive shaft journaled in saidhousing and extending into the casing, the drive shaft being pro videdwith a reduced extremity, a follower shaft journaled in the neck of thecasing and adapted, for connection with the differ ential, the followershaft being provided with a bored extremity receiving the drive shaftreduced extremity therein and effecting a thrust bearing therewith, agear car-- ried by said follower shaft, a clutch carried by said gear, agear slidable and non-rotata bly mounted upon said drive shaft, aclutch. carried thereby, a jack shaft, connected gears rotatablv andslidably mounted upon said jack shaft adapted to mesh with the gear onthe drive shaft and. the gear on the follower shaft for thetransmission. of motion between said drive and follower shaft gears, andIfie'ans for moving said jack shaft connected gears and said drive shaftgear for the direct transmission of motion between said drive andfollower shafts for the independent rotation of said drive shaft and forthe transmission of motion between the said drive and follower shaftsthrough said gears to vary the speed, and means for locking the driveshaft and its gear together to hold the shifting parts in their severalpositions.

3. An attachment for motor vehicles,

manner eornprzsing a casing having a neck project housing extending fromsaid casing in line with said neck, a bearing in said housing, a driveshaft journaled in said bearing and extemiing into theeas ing, the driveshaft provided with a reduced extremity, m g inihe neck of said casing,a folshaft onrnaled in said bearing and adapted for connection with thedifferential gear casing of a vehicle, a drive shaft 1 tisi, thefollower shaft being provided With a bored extremity receiving the driveshaft reduced extremity therein and effecting a thrust bearingtherewith, a gear carried by sand follower shaft, a clutch carried bysaid gear, a gear-siidably and non-rotatably n onnted \fpon saiddriyeshaft, clutch carried thereby, a fixed jack shaft, connected gearsrotatahly and slidably mounted upon said jack shaft adapted to mesh Withthe gear carried 'bvthe follower shaft and the gear carried by the driveshaft for the transmission of motion between said drive and followershaft gears, means for simultaneouslyv moving said jack shaft connectedgears and said drive shaft gear for the direct transmission of motionbetween said drive and follower shafts for the independent rotation ofsaid driveshaft and for the transmission of motion between the saiddrive and follower shafts through said gears at a reduced speed, andmeans for locking the drive shaft and its gear together to holdtheshifting parts in their several'positions.

MUNROS. BROWN.

Witnesses F. L. Annnnws, O. H.- PARKER.

